Answer:
10000 cm to 1000 m ratio is 1:10
Step-by-step explanation:
To find : The simplified ratio correctly compares 10,000 centimeters to 1000 meters.
Solution :
To find the ratio first we make the unit same.
1 m= 100 cm
1000 m= 1000 × 100 cm
1000 m= 100000 cm
Now, to compare 10,000 cm to 1,00,000 cm
The ratio is

10000 cm to 100000 cm ratio is 1:10
or 10000 cm to 1000 m ratio is 1:10